Roxborough, Ian.
Humanities Press, 1979
Buku Teks
Sutcliffe, R.B., author
Addison-Wesley, 1971
Buku Teks
Bagchi, Amiya Kumar, author
Cambridge University Press , 1984
Buku Teks
Kiching, Covin
Methuen, 1982
Buku Teks
Strangio, Donatella, author
[Springer, ], 2012
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